Adhesive tape cartridge, adhesive tape roll, and manufacturing method of adhesive tape roll

Abstract

The disclosure discloses an adhesive tape cartridge including an adhesive tape roll that is disposed in a housing and winds a double-faced adhesive tape. The double-faced adhesive tape comprises a base material layer, a first adhesive layer, a second adhesive layer, and a separation material layer. The first adhesive layer is disposed on one side of the base material layer in a thickness direction and comprises an adhesive with a first pigment. The second adhesive layer is disposed on the other side of the base material layer and comprises an adhesive with a second pigment. The separation material layer is disposed on the other side of the second adhesive layer. An average particle diameter of the first pigment in the first adhesive layer and an average particle diameter of the second pigment in the second adhesive layer is different from each other.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority from Japanese Patent Application No. 2016-195292, which was filed on Sep. 30, 2016, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUNDField[0002]The present disclosure relates to an adhesive tape cartridge having an adhesive tape roll into which an adhesive tape is wound, as well as to the adhesive tape roll and a manufacturing method of the adhesive tape roll.Description of the Related Art[0003]An adhesive tape cartridge having an adhesive tape roll into which an adhesive tape is wound has already been known. In the prior art, the adhesive tape has a layered structure including: two adhesive layers (a first adhesive layer acting as a bonding adhesive layer and a second adhesive layer acting as an affixing adhesive layer) with a base material film interposed therebetween; and a separation material layer (separation sheet).[0004]In the adhesive tape of the above lay...

AI Technical Summary

Benefits of technology

This patent is about a way to make an adhesive tape cartridge with two different colored pigments. If the pigments are mixed in a single layer, they interfere with each other and don't blend together very well. However, by separating the layers with different pigments, they can fully exert their effects and the resulting tape is not thicker or takes longer to manufacture. The two pigments create a unique color tone and make the tape shine or feel moist. This technology allows for longer tape rolls and more colors to be expressed without increasing the overall thickness of the tape.

Problems solved by technology

However, if those two different pigments mixedly exist in a single layer (the adhesive layer), interference occurs between the two pigments, so that the pigments cannot fully exert their respective effects.

In this case, however, the two additional layers bring about an increase in the total thickness of the adhesive tape and an attendant increased manufacturing process.

If desired to use two types of pigments with the intention of obtaining two different colors for example, intermixture of those pigments within a single layer induces interference between the two pigments, preventing the pigments from fully exerting their respective effects.

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